Automatic steam-valve



(No Model.)

L. A. HOTCHKISS.. AUTOMATIC STEAM VALVE.

No. 596,001. Patented Dec, 21, Y1897.

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i' UNITED STATES PATENT OFFICE.

LYMAN A. HOTCHKISS, OF PERRY, PENNSYLVANIA.

AUTOMATIC STEAM-VALVE.

SPECIFICATION forming part of Letters Patent No. 596,001, dated December 21, 1897.

To all whom t may concern.-

Be it known that I, LYMAN A. Horcnxrss, of Perry, in the county of Forest and State of Pennsylvania, haveinvented a new and Improved Automatic Steam-Valve, of which the following is a full, clear, and exact description.

This invention is a valve for automatically stopping the passage of steam upon certain action of the water in connection with which the valve acts.

The invention is particularly designed for.

use in connection with automatic injectors for steam-boilers, so as to control the action of the injector according to the condition of the water within the boiler.

This specification is the disclosure of one form of my invention, while the claims define the actual scope of the conception.

Reference is to be had to the accompanying drawings, forming a part of this speciiication, in which similar characters of reference indicate corresponding parts in all the gures.

Figure 1 is a view showing the application of the invention. Fig. 2 is a vertical section taken through the valve, and Fig. 3 is a detail view of a member of the valve.

As shown in Fig. l, the automatic valve A is connected by a pipe B with the lower portion of the boiler C and to the upper portion of the boiler by the pipe D, the pipes B and D running oppositely from the valve. The pipe B is provided at its point of connection with the boiler C with a suitable check-valve B', and the pipe D is connected to the boiler C by a curved pipe D. Steam passes from the boiler through the pipe D and out of the valve by the pipe E, leading horizontally from the valve. The checkLvalve B' at the bottom of the pipe B prevents the water from rising to the float-chamber 7. The water rising in the boiler C to the curved pipe D', which pipe may be connected to the boiler at any desired water-level, overiiows and fills the float-chamber 7, thus controlling the valve A.

The valve-casing is formed in two sections 5 and 6, the sections being bolted to each other and the Section5 forming a loat-chamber 7, while the section 6 forms a main-valve chamber S and two longitudinallyregistering auxiliary-valve chambersQ. The pipes B and D Application filed June 24, 1897. Serial No. 642,125. (No model.)

communicate with the chamber 7, and the pipe E leads from an intermediate portion of the main-valve chamber 8.

The valve-chamber 8 communicates by a large intermediately-located port 10 with the chamber 7. Working in the chamber 8 is the main Valve, which has a disk 11 and a cylinder 12, rigidly connected by a stem 13. In each end of the chamber 8 a screw 14 is adj ustably held, whereby the movements of the main valve are limited. The arrangement of the disk 1l and cylinder 12 is such that when the main valve assumes the position shown in Fig. 2 a free passage is afforded from the chamber 7 through the port 10 and out through the pipe E. The main valve may move upward in the chamber 8 to engage the upper screw 14, whereupon the cylinder 12 will lie over the port 10 and closesaid port.

The movement of the main valve is effected by a compound auxiliary valve which works in the auxiliary chambers 9. The compound auxiliary valve consists of a rod 15, sliding in the chambers c 9 and spanning the port 10, each end of the rod 15 having a reduced portion 16. These reduced portions 16 are capable of alternately registering with ports 17, extending through from the chamber 7 to the ends of the chamber 8. Each end of the rod 15 also has alongitudinally-elongated port 18, capable of communicating with outlet -passages 19, located in the upper and lower portions of the valve-casing and leading to the atmosphere. l/Vhen the auxiliary valve is in the position shown in Fig. 2, steam will pass through the uppermost port 17 to the upper part of the chamber 8 and, acting on the face of the disk 11,will force the main valve to move down to the position shown by full lines in-Fig. 2. This will open the port 10 and permit the steam to pass from the pipe D through the chamber 7 and out of the pipe E. If the auxiliary valve is lowered from the position shown in Fig. 2, the port 18, at the upper end of the rod 15 of the auxiliary valve, will register with the contiguous port 17, relieving the pressure upon the face of the disk 11. Simultaneously the reduced portion 16, at the lower end of the rod 15, will register with the contiguous port 17, and the steam-pressure will act on the lower head TOO of the cylinder 12 and lift the main valve until the upper screw 14 is engaged, whereupon the port 10 will be closed.

The operation of the compound auxiliary valve is eected by means of a float 20, normally seated in the lower portion of the chamber 7. Rigid with the float 20 is an arm 21, fulcrumed to a post 22, carried by the valvecasing, the arm 2l entering loosely within an opening 23, formed in the rod 15. When the action of the steam passing out of the pipe E has injected into the boiler a suicient amount of water, the water will lift float 2O and stop the flow of water. By means of a petcock 211 the water may be drawn from the chamber '7.

Having thus described my invemtion, I claim as new and desire to secure by Letters Patentl. .A valve having a lioat-chamber, a mainvalve chamber communicating with the iioatchamber and having a Huid-outlet, a main valve Working in the said valve-chamber, and having a disk and a cylinder rigidly oonnected by a stem, the valve also having two registering auxiliary-valve chambers, each valve-chamber being provided with a port communicating with the atmosphere and each valve-chamber being crossed by a port leading between the float-chamber and the main-valve chamber, a compound auxiliary valve Working in the auxiliary-valve chambers, each end of the auxiliary valve having a reduced portion and an elongated port, and a iioat mounted Within the float-chamber and having an arm in connection With the auxiliary valve.

2. A valve having a casing with a ioatchamber, the casing also having a main-valve chamber communicating with the Iioat-chamber by means of an intermediately-located port, and the casing also having two auxiliary-valve chambers respectively on the sides of said port and in registry With each other, the outer portions of the auxiliaryvalve chambers having ports leading to the atmosphere and also having ports running across the auxiliary-valve chambers and establishing communication between the float-chamber and the main-valve chamber, a main valve mounted Within the main-valve `chamber and having a cylinder and a disk rigidly connected by a stem, a compound auxiliary valve mounted in the auxiliary-valve chambers, each end of the said auxiliary valve having a reduced portion and an elongated port, and a float mounted Within the ioatchamber and having connection With the auxiliary valve, whereby the valve may be operated.

LYMAN A. HOTCHKISS. iVitnesses:

Trios. M. OSHEA, R. M. DAVIDSON. 

